Most Successful Entrepreneurs Under The Age Of 30
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David Karp

david karp, tumblr. MIT technology review, twitterBorn in 1986, David Karp is better known as the founder and CEO of Tumblr, a micro-blogging platform that allows users to post text, images, videos, links, quotes, and audios to their tumblelog. The site ranks as the 10th largest social network, with 6.8 million weekly visits, and as of July 2011, has 13.4 million unique visitors. He has been named as one of the top 35 innovators in the world by MIT Technology Review. Tumblr raised $5.25 million in funding, including 2 lead investors with Twitter.